Weaving loom



A. DAVED.

' WEAVINGLOOM' APPLICATION FILED JAN-5,1920.

m m mu 22, R922.

ADRIEIQ' DAVID, OF ST. ETIENNE, FRANCE.

W'L'JAVING LOOIE.

inseam.

Specification of Letters Patent.

Application filed January 5, 1920. Serial No. 3%,462.

T all whom it may concern:

Be it known that T, Anninn DAVID, a citi- Zen of the French Republic, residing at 1 Place Dorian, St. Etienne, Loire, France, have invented certain new and useful Tmprovements in Weaving Looms, of which the following is a specification.

My invention relates to looms and more particularly to that class employed for weaving narrow fabrics, such as, for example, ribbons, tapes, bands, and the like.

' The object of my invention is to provide improved means for operating the batten and the shuttles.

With this and other objects in view the present invention consists in the novel construction and arrangement of parts hereinafter described and more particularly pointed out in the claims, but it is to be understood that any improvements are applicable to looms other than those of the class hereinbefore referred to.

In the accompanying drawings illustrating the invention Figures 1 and 2 are a sectional elevation and a plan respectively of the shuttle driving mechanism.

Figure 3 is a partial View, tion, and

Figure 4: is a partial view, in plan, of a modified detail.

Behind the batten 7 two angle irons and 56 (Figures 1 to 4:) are arranged and attached to the rack 57 by means of a plate 57 and a transverse shaft 58 carries at one end a triangular cam 59 which is contained in the cage formed by the angle irons 55 and 56. This cam receives an oscillatory motion from a pinion 6O gearing with a rack 61 which receives an alternating motion by means of a crank 62 and a pivot 63 mounted at the end of a shaft 64:. The cam 59, mounted at one corner on the shaft 56, when oscillating to the in front elevaleft Wlll carry the angle iron 55 to the left and the angle iron 56 will also move towards the centre of the shaft 58, and when oscillating to the right said cam will carry the angle iron 56 to the right and the angle iron 55 to the centre of the shaft. The rack 57 attached to the partitions will follow this movement whatever may be the position of the batten. As soon as one or other of the angle irons reaches the centre of the shaft, the rack and the shuttles are at rest. This state of rest will be more or less extended according as the cam prolongs to a greater or lesser extent its movement in the same direction which is dependent upon the length of stroke iven to the rack 61 by the displacement or the pivot 63. 1

The shuttles are secured to the member 57 by means of the pins 70, as best shown in Figure 1 of the drawing.

In order not to have the cam 59 excessively small for small widths of ribbons or excessively large for wide ribbons, the rack 57 of these battens may be driven by a bar 67 (Figure 4:), connected to it at each end by reducing pulleys 68 and 69, and the angle irons 55, 56 will then be fixed to the bar 67 and they will impart to the rack 57 a stroke opposite in direction and differing in magnitude from that of the bar 67 in proportion to the ratio of the diameters of the pulleys 68 and 69.

All the chief parts of this loom, being arranged in the manner just explained, carry out the movements mechanically, the batten being capable of moving at a high speed without itsweight acting either as an accelerator or a brake; the shuttles being guided by a progressive movement, are retained without shocks; the shedding movement of the heddle frames being progressive and rigidly operated in both directions and the security offered by the rollers retained between and operated by two cams enables a much higher efficiency to be obtained than that possessed by any of the ribbon looms hitherto known.

l/Vhat I claim and desire to secure by Letters Patent of the United States is 1. In a narrow wear loom, the combination of a batten, a shuttle connected therewith, angle irons secured to the rear face of the batten, a shaft having at one end a ver tically disposed cam extending between and contacting with said angle irons, a pinion mounted on the opposite end of said shaft, a vertically reciprocating rack geared to said pinion, and means for varying the stroke of the rack.

2. In a narrow wear loom, the combination of a batten, a shuttle connected therewith, angle irons secured to the rear face of the batten, a shaft having at one end a triangular shaped cam housed between said angle irons and at its other end a pinion, a reciprocating rack geared to said pinion, a crank for innparting vertically reciprocating motion to said rack, and means for varynected to said ing the stroke of the rack to a predetermined degree.

3. In a loom, a rack driven by a bar con-J rack at each end by reducing pulleys, angle irons fixed to said bar, a shaft, a cam mounted at one end of the shaft and engaging the rack, and means for oscillating the shaft.

l. In a loom, the combination of a batten, a shuttle connected therewith, a rack driven. by a bar connected to said rack at each end by reducing pulleys, angle irons fixed to said bar a shaft having at one end a triangular shaped cam housed between said angle movement is imparted end a pinion geared 15 Which an oscillating so that the rack has a stroke imparted thereto opposite in direction and different in magnitude from that of said bar in proportion to the ratio of the diameterof said reducing pulleys.

In testimony whereof I have affixed my signature in presence 01 tWo Witnesses.

ADRIEN DAVID;

irons and at its other to a vertical rack to Witnesses F, CINARD, OUAYESP. 

